DevTools: make disable javascript setting temporary

third_party/WebKit/Source/devtools/front_end/main/module.json

 {
     "extensions": [
         {
             "type": "@Common.AppProvider",
             "className": "Main.SimpleAppProvider",
             "order": 10
         },
         {
             "type": "@UI.ContextMenu.Provider",
             "contextTypes": [
@@ skipping 233 matching lines @@
                     "title": "Enable cache"
                 }
             ]
         },
         {
             "type": "setting",
             "category": "Debugger",
             "title": "Disable JavaScript",
             "settingName": "javaScriptDisabled",
             "settingType": "boolean",
+            "storageType": "session",
             "order": 1,
             "defaultValue": false,
             "options": [
                 {
                     "value": true,
                     "title": "Disable JavaScript"
                 },
                 {
                     "value": false,
                     "title": "Enable JavaScript"
@@ skipping 175 matching lines @@
         "ExecutionContextSelector.js",
         "Main.js"
     ],
     "resources": [
         "errorWarningCounter.css",
         "remoteDebuggingTerminatedScreen.css",
         "renderingOptions.css",
         "targetCrashedScreen.css"
     ]
 }